The Usefulness of Plant Growth EnhancersThis experiment was conducted to find out the effectiveness of organic fertilizers in improving plant growth. The results of this experiment might help us improve crop yields.

Difficulty: Elementary school

How do different cooking alternatives affect the Vitamin C content in vegetables?This experiment is conducted to find out how different cooking methods affect the vitamin C content in vegetables. Vitamin C is an essential mineral to the human body and vegetables are the main source of it in our diet. In order to preserve the Vitamin C concentration in the vegetable, the vegetables have to be cooked in the best way possible. Hypothesis: Vitamin C content would be lower for carr

Difficulty: Middle school

The relationship between the pH level of soil and plant growthThis science fair project was conducted to examine the relationship between the pH level of soil and plant growth. Specifically, what is the ideal pH level at which Kentucky bluegrass grows? Kentucky bluegrass was grown in soils that had different pH levels (6.0, 6.5, 7.0, 7.5 and 8.0).

Effect of caffeine on plant growthThis science fair project was performed to find out the effect on plant growth of adding caffeine to the soil. The experiment was done by using mung bean plants and watering them daily with water, water mixed with caffeine and with a coffee mixture.

Difficulty: Middle school

Earthworms and plant growthThis experiment was conducted to determine how the presence of earthworms in soil can affect plant growth. The experiment was done by comparing the germination and growth of tomato, green beans and radish plants in soil samples that contiained earthworms, with those that did not contain any earthworms.

Difficulty: Middle school

Stoma density and pollutionThis science fair project was conducted to determine the effect of pollution on the stomata density of coniferous trees. The science fair project was done using samples of pine tree leaves from 3 locations with different levels of traffic flow.

Difficulty: Elementary school

Effect of milk on plant growthThis science fair project was conducted to determine if watering plants with milk affects their growth. The experiment was done using tomato plants and watering them with water and milk.

Difficulty: Elementary school

Effect of moisture on direction of root growth
This science fair project was done to determine if the direction of root growth is affected by the presence of moisture. Green beans were germinated and it was observed if the roots will grow towards the moisture.

Difficulty: Elementary school

Examining the effect of watering on plant growthThe objective of this science fair project is to determine the effect of different amounts of water on plant growth. The experiment will be carried out by watering mung beans with different amounts of water, and observing their rate of growth

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